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I'm buying a '96 600 XLT and I was wondering how to add some horsepower. I've been looking at doing something to the exhaust and intake (reeds or jetting). Thunderproducts.com has a Dial-a-jet but I don't know if that will tear up the engine and if its worth the money. Snowmobile-accesories.com has a silencer that they say would add a couple horses and shave ten pounds. If anyone could shed some light on this for me it would be great. I also want to find out all the specs on this sled: type of clutch, weight,compression ratios, etc. so I know what to deal with. If you know any good technical web sites devoted to snowmobiling that would be great. I like tinkering with engines to make them run good.
 

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well the easiest horsepower gains are in the exaust system. I wouldnt worry about the dial-a-jet system unless you ride in a variety of altitudes...once you find the correct jetting for your sled...it shouldnt change much unless you plan to ride it in 50+ degree weather. The other thing i would do is get a clutch kit for it...now this doesnt add horsepower to the engine but it does add "seat of the pants" horsepower. One last thing i would take a look at if you are looking for more power would be the "power dome" cylinder heads that dennis kirk sells. They run about $190 (US) and claim to gain up to 8 horses.
 

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In my opinion, I don't think people should go too far in upgrading xlt's to gain more hp. A few tweaks here and there is ok, but doing major changes, well.....it ain't good. Xlt's are prone to failure when modified. They are best when kept stock, at least thats what I think.

 

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ah yet another xlt rider,, i tell you guys look out, the xlt's are taking over, all i would consider doing tomy xlt is pipe and clutch it, it sounds mean the way it is, but i want something to wake the neighbors.....lol
 

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ive been searching the web awhile, and i cannot find anything on snowmobile specifacations, i know my xlt wieghts471lbs, i wish i knew where to find info like that on the web
 

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Specifications for Polaris Snowmobiles can be found at http://www.geocities.com/polaris-man which soon will be PolarisFiles.com

 

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ive been there, tells me the same thing as my owners manual, triumph said polaris wont give out hp specs, i guess id like to know more about the clutch, thanks for the response though,


all other things, refer to your authorized polaris dealer-thats what my books says, what a crock!!!!!!!!!!!!!
 
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